target-arm: Support v6 barriers in linux-user mode

[qemu.git] / exec.c

diff --git a/exec.c b/exec.c
index 067bb343e1c9cf87372745b47e6f9c4460bd3206..2160ded4017f9f3f820360cb5a388bb5facdc8c2 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -3167,8 +3167,11 @@ void *qemu_safe_ram_ptr(ram_addr_t addr)
 
 /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr
  * but takes a size argument */
-void *qemu_ram_ptr_length(target_phys_addr_t addr, target_phys_addr_t *size)
+void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size)
 {
+    if (*size == 0) {
+        return NULL;
+    }
     if (xen_enabled()) {
         return xen_map_cache(addr, *size, 1);
     } else {
@@ -3184,9 +3187,6 @@ void *qemu_ram_ptr_length(target_phys_addr_t addr, target_phys_addr_t *size)
 
         fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr);
         abort();
-
-        *size = 0;
-        return NULL;
     }
 }
 
@@ -3238,7 +3238,7 @@ static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr)
     printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 0, 0, 0, 1);
+    cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 1);
 #endif
     return 0;
 }
@@ -3249,7 +3249,7 @@ static uint32_t unassigned_mem_readw(void *opaque, target_phys_addr_t addr)
     printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 0, 0, 0, 2);
+    cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 2);
 #endif
     return 0;
 }
@@ -3260,7 +3260,7 @@ static uint32_t unassigned_mem_readl(void *opaque, target_phys_addr_t addr)
     printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 0, 0, 0, 4);
+    cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, 4);
 #endif
     return 0;
 }
@@ -3271,7 +3271,7 @@ static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_
     printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 1, 0, 0, 1);
+    cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 1);
 #endif
 }
 
@@ -3281,7 +3281,7 @@ static void unassigned_mem_writew(void *opaque, target_phys_addr_t addr, uint32_
     printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 1, 0, 0, 2);
+    cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 2);
 #endif
 }
 
@@ -3291,7 +3291,7 @@ static void unassigned_mem_writel(void *opaque, target_phys_addr_t addr, uint32_
     printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val);
 #endif
 #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE)
-    do_unassigned_access(addr, 1, 0, 0, 4);
+    cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, 4);
 #endif
 }
 
@@ -4052,7 +4052,9 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
     target_phys_addr_t page;
     unsigned long pd;
     PhysPageDesc *p;
-    target_phys_addr_t addr1 = addr;
+    ram_addr_t raddr = ULONG_MAX;
+    ram_addr_t rlen;
+    void *ret;
 
     while (len > 0) {
         page = addr & TARGET_PAGE_MASK;
@@ -4080,13 +4082,18 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
             *plen = l;
             return bounce.buffer;
         }
+        if (!todo) {
+            raddr = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);
+        }
 
         len -= l;
         addr += l;
         todo += l;
     }
-    *plen = todo;
-    return qemu_ram_ptr_length(addr1, plen);
+    rlen = todo;
+    ret = qemu_ram_ptr_length(raddr, &rlen);
+    *plen = rlen;
+    return ret;
 }
 
 /* Unmaps a memory region previously mapped by cpu_physical_memory_map().